Workshop
Manual
Rolls-Royce Silver Shadow
B
Bentley
T
Series
2.
Using the correct anti-freezelwater mixture,
fill the system by pouring slowly to avoid the
possibility of air locks.
3.
Start the engine and allow time for the system
to reach normal operating temperature ensuring
uniform distribution of the coolant
4.
Stop the engine and check the coolant level.
Top-up if necessary. The correct level is when the
coolant reaches the rubber seal in the filler neck
5.
Fit the radiator filler cap.
6.
Check the tightness of all hose clips.
7.
Examine all disturbed hoses and joints for
leaks.
Coolant
-
To
check
In the majority of cases hydrometers, used for
checking anti-freeze concentrations, are inaccurate
above a 40% figure.
As the acceptable range of concentration is between
45% and
55%, a refractometer, similar to the 'A0 Duo
-check' instrument, is more suitable for measuring a
50% solution.
The graph
(see
Fig.
L3)
shows the degrees of frost
protection converted to a percentage concentration.
Should the system be less than the acceptable limit,
the graph indicates the necessary amount of coolant
to be drained from a full system before replacing
with 100% anti-freeze.
1. After pouring into the system the correct
amount of 100% anti-freeze, replace the filler cap,
then run the engine on fast idle for approximately
five minutes to enable a complete mix with the
existing solution. Failure to circulate the new anti-
freeze will result in an incorrect reading.
2.
Remove the filler cap and check that the
solution now measures within the range shown on
the graph
(see
Fig.
L3).
Rectify if necessary.
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